The Nine Realms of creation are collectively referred to a s the World Tree. The crowning realm of the World Tree is Vitaterna, home of the Celestials. The trunk of the world tree is Primus Materia, home to mortal folk like you and me. Around Primus Materia circles a great draconic serpant carrying the 4 elemental realms on its back. Calceopus is the realm of fire and metal. Aeris is the realm of gasses, vapors and mists. Aquas is the realm of water and ice. Jotunheim is the realm of dirt and stone. The lower realms are divided into three roots. The shallowest of the three is Anait Mhaith realm of magic and beauty. A near twin Umbrastella is the realm of dreams and seduction. The deepest of the lower realms is Hell, the realm of damnation and torment. The space inbetween the realms is the Abyss a chaotic space filled with demons. Beyond that lies the Pogisaifafo, the outer darkness eternal empty space where rests incomprehensible Eldritch Horrors.